300hp+ Kawasaki ZH2 Extreme EP4

[@flibbertigibbet6200]

Kawasaki should win an award for these super charged engines, Just incredible what they can put out and so reliable.

[@HydroTECGaming]

That clutch cover looks sooo freaking good! When I bought my ZH2 new in 2020… I had no idea, I’d be seeing one with over 300HP!!! And thanks for clearing up that rumor about internals. The reason that never sounded right to me was because it would in theory increase production cost.

[@mikew6135]

Someone needs to inform Chris Moore of the engine similarities and potential of the ZH2. Hes living under a rock on this one.

[@Henchmen1]

How so he has ah zh2

[@ST-kq9py]

@@Henchmen1he thinks the Z-H2 has forged pistons so is misinformed on that, same rods, valves and crank so also misinformed on those details.

[@Henchmen1]

@@ST-kq9py oh okay

[@default2907]

@@Henchmen1can confirm, just asked him the other day if he’d think the gears would be fine with an intercooler, he said intercooler would be help but still would blow the stock engine for mine

[@chriswade3986]

I have a 2018 H2 sx se made 271 hp when we finished. Stage 3 gears , full Vandemon H2R style exhaust, turbo smart blow off valve, H2 spark plugs, Woolich tuning software. Bike is insane. When we started it was around 170 hp . I also have a 21 H2 Carbon edition that I will be building over winter. I’m super excited to see what else you do . I have your parts on my bike. Including the custom oil cap , and boost gauge mount. Awesome work.

[@ProudMurican_PVT-GR137]

Please post a little bit of that build on your channel

[@chriswade3986]

@@ProudMurican_PVT-GR137 I’m going to do a video of the build , some dyno runs and the finished product.

[@TheBigChad]

Blow off valve doesn’t give you any kind of performance. I feel like the stock valve sounds better than a bike that whispers to me when engine braking. I’ve been trying to make a bov that does the high pitch noise you hear on turbo civics but it’s hard to get that sound with a supercharger. Nice build tho, bikes at 200hp are nuts as is, but 270+? I bet she rips the concrete apart on the interstate. Badass bro!

[@chriswade3986]

@@TheBigChad I know it doesn’t give any performance, but it definitely changed the way the bike sounds. And it looks really good. The bike is the shop now getting a bunch of carbon fiber parts , and a roaring toyz swing arm .

[@TheBigChad]

@@chriswade3986 I’m not hating on it at all!! I love the build currently. That swing arm will be sexy af too

[@dorstefan]

Thank you for clarifying the details regarding the motor. Awesome job.

[@chrisleigh-vd8ew]

300hp, good luck with that engine!! 😂

[@blip98]

I think this officially makes you an evil genius!

[@shannonsengineering]

You made your own plug... Fuck you amaze me every time Benny! Well done.

[@stevennelson3711]

Wow!! You’re the man!! Thank you for all your great videos!! You’re teaching the world about the ZH2’s!! 👍🙏😊🏍

[@sural89]

good to see you back thx for restoring the truth with the h2, everyone saying it has weaker piston than the h2.....now we know and amazing result of course, would love to see the bike on road or track

[@LastRightsTV]

My favorite bike. Zh2 is just a monster.

[@Sjsiisnwbe]

Bruh i cant imagine what its like riding on this beast, my 255hp h2 is already insane. This is just on a whole'nother level

[@MustangTTGT]

Great video! Answered a ton of questions I’ve had with my ZH2. Knowing now they are very similar internally to an H2 makes me feel better. I just installed your intercooler and now I want to add a flash.

[@jeffchristensenm.a.6930]

Spectacular! Excellently done process. Thank you.

[@nitronaf]

Thanx for the upload Ben

[@timtourt7548]

Hi,back again,very informative with your internal engine components comparison. I've owned 6 turbo busas,1turbo zx14.great work,much appreciated

[@HoonTV]

Great video Ben!

[@ΓιώργοςΚυρίκος-ξ7ε]

Well done my friend this is so perfect .so much power .

[@cde6505]

Great work, and fantastic results. You mention fitting the swingarm from an H2SX won’t work as it hasn’t got the cutout like the regular H2 has. The cutout in the H2 swingarm is for the fuel pump bulge in the under tray, not for shock clearance, I’ve fitted H2 Ohlins to a SX with no clearance issues. The SX swingarm is 15mm longer and would give you some help during launches..😁

[@extcreat]

Yes you are correct about the cutout,. Realised what I said afterwards.

[@sidneigouvea2796]

Fuel tech Brazilian number 1

[@fisshuman]

Well that's not ZH2 anymore. It's naked H2R without carbon

[@lucasreis7222]

the next step would be a big Super charger wheel + h2R Cams, pushing over +400 whp? there are few H2's in the world with SC upgrade and + 400 whp on the streets, it's always good to see how far the limit of this engine goes, new challenges, of course with the proper safety with forged internal parts of course.

[@extcreat]

There's an easter egg in the last 2 seconds of this video 🙂

[@lucasreis7222]

@@extcreat I think I know the size of this wheel, it exists for the H2, upgrade, 72mm,76mm,78mm, there is the 84mm that has not been tested, just a "prototype", the 76mm is easily above 400 whp, the size of your new sc is 76 mm probably, hshshsshshs

[@lucasreis7222]

@@extcreat I don't remember the size of the original H2 wheel, something around 68mm, the 72mm rotor already brings big power gains.

[@ARussBus]

@@extcreat if you turbo this bike..... oh my lordy.

[@bullfrogzh2133]

Great video!!

[@CaffeineThrottle]

Good info on engine internals.👍

[@EastSideNYC]

Can’t wait to see a update on this

[@chriscarter9875]

This the power i want for my ZH2🏆

[@rolandgeorges960]

Awesome video, I need to ship you mine from the US. I have been posting about the internals and telling people about the internals being the same as the H2, my source comes directly from Kawasaki Engineering Department and Development of H2/Z H2. Great job.

[@Lumberjack0286]

awesome video. so the cat removal wouldnt bring much in power? i have your intercooler in my h2sx, awesome work i got from you. But i have a little question: when riding 20km on autobahn at vmax i get ~70°C IAT on hot days at 30°C ambient temp (much lower then without IC, before i read 90+°C), so i have concerns about increasing ignitiontiming. On Dyno i have only 40-45°C. When i go to maximum ignition on this low IAT i guess i will kill the engine on autobahn?

[@extcreat]

You need to be careful adding too much ignition timing to these bikes especially when pump fuel, @ 70 deg C your ecu will start pulling timing anyway so there's no point adding more. I'm not going to quote an ignition timing figure you should be using as I don't know your exact fuel & engine setup, Im happy to discuss it further if you email me.

[@TLH442]

Ya. The curve was almost identical so the first run engine configuration was already hitting a wall/bottleneck. It was a system you hadn't modified limiting the performance. BTW, holy, man you are on it. Jolly good show. (sorry I was watching "The Bridge Over The River Kwai" today. Right, carry on.

[@vicsh4581]

Awesome mate

[@TurboMio]

Amazing clutch cover ❤

[@linda454]

THAT is awesome! Thanks for sharing and explaining.

[@Vandemonexhausts]

Thank you Ben for what was a very informative video explaining in detail the pathway to what are stunning Hp numbers from what is or was a difficult engine to get such good power numbers due to the higher compression of the ZH2. E85 and the timing relationship were interesting and answered a lot of questions.

[@extcreat]

I didn't really say it in the video but your exhaust definitely made a big difference to flow once we were able to get some timing into the motor. It is LOUD with the baffle out but I love it & the quality is awesome.

[@Vandemonexhausts]

@@extcreat Great hear and regarding the muffler kicking out more due to the use of a single-sided swingarm over the original twin rail we can if you intend on sticking with that spec possibly bring the muffler in by using an H2 or SE/SX link pipe?

[@TL1000S97]

Ben is The Man! 😍

[@singyuwong6707]

do ZH2 and H2 share the same rear suspension? planning to swap single side arm like yours. Anyway good work on reach 300ps !

[@neilhamill318]

Wednesday night a quarter at the creek. 👍

[@terryism]

Man I need to come past your shop with my zh2 asap

[@2wheelsfinn]

Apology accepted! Great job Ben! 🔥

[@QuinnBoone]

Moore says you'll grenade the cast imternals with those levels.....

[@patrickgzx10r]

I am doing the H2 SX version of this build. What target AFR did you go with during the tuning process. I am currently using 12.0 at all throttle positions.

[@mudwhistle74]

Well done. Amazing numbers. What causes the initial dip when you snap the throttle open? Will that make it snatchy to ride coming off closed throttle?

[@extcreat]

Nothing to do with the bike, it's the dyno brake releasing , a different technique will show a different result in that area

[@SteeveV4r]

Another video has coming?!?!?

[@hashemmousa]

Hi , just have Kawasaki ZH2 SE , i like to upgrade my bike but the drilling matter for a cooler i cant do it my self. Do u have the lower part of the cooler drilled? And what gears ratio to be fast top speed? Tnx

[@hashemmousa]

If i can ship my bike to your shop ? How much it cost me to upgrade the cooler kit

[@batuhanozdil6932]

Got 2022 zh2 and this is literally smh. Thinking to do all the upgrades you have it on here. Front wheel can you keep it down? Pls share footage when riding it pls

[@JoseRodriguez-mp1bl]

2018 R1 Supercharger!?!? When!?!? No one makes one! Why!?!?

[@timtourt7548]

Hi,awsome videos,very knowledgeable. Thinking of a 21 zh2,,ive researched this engine 11.2 compression. Are the higher levels of boost safe,per rods,pistons

[@shwnusmc119]

How fast would this running a 1/4?? Man its a beast!!!!!!!

[@RobertSmith-lh6hg]

Curious if EC intends to design a Z H2 drop in cam or test dropping in H2/H2R cams. Seems H2 cams with a 100 centerline on both will add a good bit over 10k, but should have gains from 4k to redline. 330+ seems easily attainable with a cam swap. Looking at all the part numbers it requires only springs, seats, retainers and to be an H2 spec valvetrain.

[@extcreat]

Yes we have a different cam to use & yes you are correct about the valve components

[@RobertSmith-lh6hg]

@@extcreat love the development work. Nice to see a shop that does things properly take the reigns on Z H2 development.

[@batuhanozdil6932]

Is the h2 swing arm necessary to reach out 316 hp? I was thinking to do just an extension to keep it on the ground.

[@MJ-rr4hd]

I have a Z1000 & Gsx S1000. Both are naked bikes. Both go about 155 mph in stock form. Can I achieve at least 190 mph top speed….by making modifications & ecu flashing? Maybe a turbo if necessary? Any suggestions?

[@gruntmax43]

As the bike now has a stand alone ECU, could you please advise what maximum boost pressure the bike is making with the Stage 3 supercharger drive gears. My H2 SXSE+ blew up 2 x Turbosmart FCD2s . Both only lasted for 2 to 3,000 klms. Maximum boost was 21.6 psi

[@EastSideNYC]

Can we see some h2r cams in a future vid

[@extcreat]

We have some cams to go in

[@antivht]

Great work!! Quick question are you running a manual cam chain tensioner or supercharger tensioner?? Also will a h2 head bolt on to a zh2 head and work!? That is the question

[@extcreat]

Tensioners are stock, Kawasaki changed the design on these after the early H2, they now work fine, we've not seen any issues running them. Yes the H2 head can be used on a ZH2 but you would need to change the throttle bodies the velocity stacks in the plenum, the exhaust system.

[@DenisMedeot]

Ok ,ma poi il motore quanto dura ? Non si rovina ?

[@karlvaranovich6088]

How much would it cost to get my hands on a zh2 with all this mods ? Approximately?

[@kwacker4km]

Just WOW BLOODY WOW that is totally nuts thank you for clearing up the internals are the same as the H2 should shut a few people up 😂 👏👏💯👌

[@xSkelterx]

Hello mister, how much effort and currency did this masterpiece take overall? Great vid btw subbed with a like!

[@fromfareastindy8234]

i need this custom for my ZH2 ...

[@Erwt64]

You are a dyno grandmaster!

[@windowtintpro]

Ben I think I should ride it. Purely for more R&D Cheers graeme

[@blessiejoypamaran]

May i know what are the parts that they needed for Swingarm parts

[@ryandao3047]

They made a ZH2R

[@SSCartelMuscle]

Yoo thiss is insane i want one now for my first bike lol😂❤

[@MustangTTGT]

Just to be clear, this was done on stock ZH2 injectors and only your fuel pump upgrade?

[@extcreat]

no we are using H2 injectors

[@Pau1Wi11iams]

Very impressed, great job. Mine is quick enough as is though 🤣

[@palmzteerapong]

Hi I'm from thailand I want to see turbo kit for mt09 2022

[@extcreat]

That will be happening next year.

[@triedproven9908]

Solid solid stuff. If you increase the fuel pressure by 10 psi and shorten the injector pulse width you'll make more power on the pump gas tune. It was probably having issues with atomization and not necessarily ignition. You could also decrease the gap in the plugs by a few thousands at a time. Very impressive numbers however.

[@extcreat]

Plugs were gapped down, fuel atomisation wasn't the issue.

[@mikew6135]

I dont see running such an expensive exhaust for a couple of HP over an El cheapo. Any exhaust that removes the cat would work. Id rather get some head porting and ceramic wheel bearings. Maybe just a carbon fiber front wheel and ceramic bearings

[@mr2scroll538]

Are you going to sell the patch harness

[@extcreat]

We can athough there is much more to fitting the Fueltech than just a patch harness, if you are interested you can email us though.

[@kenandavidson8460]

Kind of a hail mary here to see if i can get some answers about the injector balance tables for this bike. I've asked in forums , facebook and looked at posts made by people about the injector balance but I am asking something a little different. After you flow tested the uppers and lowers you found them to be 470cc and 320cc respectively. Im not going to go into or ask about if you can make more hp by leaning more on the upper injectors my question is about injector capacity. The stock calibration uses the upper injectors at wide open for 55% of the fuel and the lowers for 45%, with that taken into account the total fuel flow is 402cc's a min. If you were to add power or go to something like ethanol why couldnt we increase these percentages past 100% collectively to cover the added fuel demand? Say you change the tune to 100% upper injectors and 100% lower injectors at wide open so you are using the complete fuel delivery capacity of those injectors (790cc's) would this work and if not why not? I'm aware you can just add bigger injectors but if fuel delivery is still left on the table with those stock injectors it seems like a no brainer to just bump up the upper and lower %'s to go past 100% collectively. This would in theory give you more than enough injector for a lot of power and ethanol.

[@jamielee8812]

Why not just get an H2?

[@mikew6135]

Adding the H2 swingarm is a bad move for sure if you want to put the power down. Adding extensions to the factory arm is a much better idea. NO WAY are you using that much power with a stock wheelbase bike

[@09mantlek]

So if the pistons look THAT similar, what in the engine block creates the higher compression ratio? Is it the head being shallower? thinner gasket? I can't imagine that piston alone makes all the compression ratio difference... I've watched the video back so many times and cannot see a difference xD

[@lucasreis7222]

Piston shape and head chamber, these are factors that make the "famous" compression ratio, any small change in one of these points changes the rate drastically, either increasing the rate, or loosening or decreasing the compression rate.

[@lucasreis7222]

a higher compression ratio, results in higher mid-range torque, lower compression ratio, less torque and longer engine life, H2 spins at 14,000 RPM, and has a ratio of 8.5, h2 sx 11.5 and spins 12k RPM

[@09mantlek]

@@lucasreis7222 thank you Lucas. I didn’t realise such small changes make a big difference. I guess the head is different aswell since we know inlet and exhaust ports are different. I would defo take the higher compression ratio for better fuel economy. I’ve heard H2 owners get 50 miles per tank 💀. I think Kawasaki overdone it slightly by lowering the compression ratio on the H2 a bit too much. They couldn’t have known people would change gears when it was released but maybe being their first forced induction premium bike they didn’t want to take chances. The H2SX is a tourer so they had to increase it otherwise it would lose to other bikes. I want stage 2 or 3 in mine once I got all the money saved but will be seeking a professional in this area to do the tuning.

[@lucasreis7222]

@@09mantlek H2 is a very sensitive motorcycle to the temperature of the air box, if it gets too hot you lose 15-20 hp easily, in my opinion this h2 project should come with an intercooler, or kawasaki increases the efficiency of the supercharger, today the H2 makes 1.2 - 1.3 bar with original gears, that's a lot, it generates a lot of heat, the ideal was to come from the factory with 0.7 - 0.8 bar, it would generate less heat and keep the same current power.

[@lucasreis7222]

@@09mantlek if i had a H2/H2 sx and i need a few more hp, i would upgrade the supercharger wheel, original is 68mm size, i would upgrade to 72mm, with original SC gears, you can add +- 30 whp or more, that means making more power and having a lot more efficiency, and I would add an intercooler along with a new fuel pump.

[@emgiusti88]

Kawasaki explicitly states they use a completely different supercharger impeller, different blade pattern

[@extcreat]

Well we have had them side by side & can see/measure no difference, marketing departments are known for telling lies when they think they can get away with it.

[@extcreat]

Like a H2R makes 300 hp 😂 thats one of my personal favourite Porkys

[@mot-trance]

Using E85 !!?? Ahm... i understand it right... Benzin Mix with 85% Alc like E10, E20...

[@timotheo03]

🔥🔥

[@mikew6135]

Nice exhaust. Way too high price. Cat delete mid system is fine. Id rather spend the money on E85 conversion. High compression and boost is E85s forte

[@flok1971]

Wowwwwww!! That bike likes to kill you! 😅

[@cuinican1980]

Why you so happy over a few hp more then stock? All that money for an H2R and all you managed to do is a few hp more and make it naked. I guess you get a thumbs up. I like naked bikes

[@rayghost770]

Omg

[@gruntmax43]

OK

[@jpbsv]

Damn.... just when my savings account was recovering.

[@TL1000S97]

🤪😂😂😂 My first thought also, but it soon faded to "When can I buy the kit!!" 🤪

[@kulot3685]

1st

[@mrmedium7984]

1000cc SS bikes made this bike's torque as horsepower 15 years ago

[@Yehl-g8t]

Annoying BGM

[@BusaDad]

I just subscribed to your channel and im glad to know about the engine because I have the 2022 H2 SX SE and I'm wanting to make the same HP